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Source:
Colnect
Issued by:
Austria
Function:
semipostal
Date:
12/6
/
1936
Denom:
40+40g
Color:
blue black
Design type:
Austrian inventors
Design:
Carl Auer von Welsbach
Watermark:
unwmk
Perf:
12.5
Catalog value:
Prev:
30+30g redpur d=Joseph Werndl
Next:
60+60g viobl d=Robert von Lieben
External links:
Colnect 17134-..ight-Inventors
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